194 



PROCEEDINGS OF THE ACADEMY OF 



[June, 



CC. Pronotum of male with cephalic width contained hardly 

 twice in the greatest length of the same, not as much 

 produced caudad; sub-genital plate of female arcuato- 

 convergent, narrowly acute-angulate emarginate 



distad antillarum (Redtenbacher) . 



BB. Pronotum of male subequal in width tubulatum n. sp. 



AA. Terminal joint of maxillary palpi not so elongate, expanding 



widely distad, very obliquely truncate. 



B. Form compact, pronotum of male widening gradually, but 



broadly caudad, not constricted in either sex; subgenital 



plate of female arcuato-convergent, carinate meso-caudad, 



very narrowly acute-angulate emarginate distad, 



contectum n. sp. 

 BB. Form rather slender, pronotum of male narrow, expanding 

 gently caudad, noticeably constricted in both sexes; sub- 

 genital plate of female arcuato-convergent, broadly 

 obtuse-angulate emarginate distad trigonipalpum n. sp. 



Cryptoptilum hesperum n. sp. 



This species is closely related to C. antillarum, but differs from it 

 in having the interantennal protuberance more produced and bulb- 

 ous, the joints of the maxillary palpi more elongate with the 

 terminal joint more roundly and less obliquely truncate. The 

 pronotum is heavier in both sexes, and considerably longer pro- 

 portionately in the male. The caudal tibiae and metatarsi are very 

 slightly longer in proportion to the length of the caudal femora, the 



caudal metatarsi having normally on each 

 dorsal margin ten or more serrations. In 

 the male the subgenital plate is much as 

 in antillarum, but in the female it is gently 

 arcuato-convergent laterad, broadly ar- 

 cuato-truncate distad with no trace of 

 emargination. 



Type: 9 ; San Lazaro, Lower Cali- 

 fornia, September, 1894. [Hebard Col- 

 lection.] 



Description of Type. — Size medium for 

 group. Head small, interantennal protu- 

 berance much produced and bulbous,much 

 longer in proportion to the general size of 

 the head than in antillarum, divided verti- 

 cally by a very minute sulcus. Maxillary 

 palpi with penultimate joint about two- 

 thirds as long as terminal joint, the latter expanding very gently 



Fig. 4. — Cryptoptiluni hes- 

 perum. Dorsal view of 

 allotype. (X 4.) 



