74 PROCEEDINGS OF THE ACADEMY OP 



thorax are as in the male: the antennas are longer than the head, 

 12-jointed, the inner angle of the 6th and 7th slightly prominent, of 

 the 8th 11th joints gradually more prolonged into a short ramus : the ramus 

 of the 11th almost equal to the 12th joint. Elytra covering only the first seg- 

 ment of the abdomen, diverging at the suture behind, and obliquely truneated 

 with the outer angle broadly rounded. Abdomen very long, cylindrical, with 

 seven ventral segments and a large anal plate, first segment very short. Feet 

 entirely as in the male. Length, 1"45. 



5.4. Podabrus pruinosus. 



55. Podabrus Tejonicus, supra pallidus, capite dense subtiliter punc- 

 tato, pone oculos nigro, thorace punctulato latitudine paulo longiore, lateribus 

 rectis, utrinque longitudinaliter late excavato, disco postice late excavato 

 callis duobus notato, elytris subtilius scabro-punctatis ; subtus piceus, anten- 

 narum basi, pedibusque pallidis femoribus posterioribus basi nigris. Long. -30. 



One specimen, Tejon. At first view, resembles P. cavicollis Lee, from 

 San Diego, but the head is more finely punctured, the thorax is comparatively 

 wider, finely punctulate, not deeply excavated in the middle for its whole 

 length, as in that species, and the elytra are more finely punctured : the ante- 

 rior angles of the thorax are rounded, while in P. cavicollis, they are obliquely 

 and broadly truncate. The ungues as in that species are broadly toothed at 

 the base. 



Tanaops, (fam. Melyrida?.) 



Antenna? frontales, in foveis inserta? : 11-articulata?, serrata? ; palpi maxillares 

 articulo ultimo longiore acuto : labrum antice rotundatum, clypeus brevis 

 membraneus : tarsi simplices antici 5-articulati, maris arLiculis duobus paulo 

 latioribus : abdomen segmentis ventralibus anticis medio membraneis : caput 

 elongatum. 



A genus composed of Malachius longiceps Lee, (Proc. Acad. Nat. Sc. 

 6, 165,) and the one described below. It differs remarkably from the other 

 genera, by the antenna? being frontal, inserted before the eyes, but not near 

 the clypeal suture, which from the length of the head is thus much farther 

 from the eyes than usual. The clypeus is membranous at apex, corneous at 

 base in the type, but in the other is entirely membranous. This would seem 

 to indicate that they were to be regarded as of different genera, but the form, 

 sculpture and coloration, as well as the length of head and position of antennae 

 are so perfectly similar in both species, that it would be very unnatural to 

 separate them. Regarding the genus as the transition form from Malachius 

 with frontal antenna? and corneous clypeus to Anthocomus with the antenna? 

 lateral and clypeus membranous, it will be clear that the clypeus might be 

 variable in structure, provided other characters be impressed sufficient to dis- 

 tinguish the group as of generic value. We will then have two groups : 1. T. 

 longiceps, with the clypeus partly corneous and the abdomen simple. 

 2. T. abdominalis, with the clypeus entirely membranous and the last three 

 segments of the abdomen with deep reniform excavations, the last one having 

 in addition a small cup like medial fovea. 



56. T. abdominalis, niger nitidus, parce nigro-pilosellus, capite elongato, 

 thorace lateribus late coccineis, elytris punctulatis limbo laterali, sutura fere 

 ad basin, apiceque coccineis, subtus rufus, antennis pedibus postpectoreque 

 nigris, abdominis segmentis tribus ultimis profunde excavatis. Long. *15. 



Tejon, one specimen. The pygidium is black, the segment before it is black 

 in the middle, rufous at the sides. Other specimens will be required to deter- 

 mine whether the curious excavations of the abdomen are sexual or specific in 

 value. 



Hapalorhinps. 



Antennrp frontales, in foveis majusculis inserta?, 11-articulata?, pectinata?, 

 vel serrata? ; palpi maxillares articulo ultimo longiore acuto : labrum trans- 



[Feb. 



