594 SEEETOOENIA. 



Central America. This insect is closely allied to Anchytarsus, Guer., but differs from 

 it in the extraordinary trilobate process of the labial palpi in the male, and the slender, 

 elongate apical joint of the maxillary palpi in both sexes. The maxillae also differ in 

 form from those of Anchytarsus. The submembranous lobes of the labial palpi are 

 almost black, and densely set with very short, minute hairs, the surface probably being 

 highly sensitive. The labial palpi of the female are formed as in Anchytarsus. 



1. Tetraglossa palpalis. (Tab. XXVI. figg. 9, <5; 9 a, labium; 9 5, maxilla 

 and maxillary palpus ; 9 c, genitalia, S\ 10, labium, $ .) 



Oblong-oval, moderately convex, shining ; piceous or piceo-castaneous, the front of the head and the antennas 

 ferruginous or fusco-ferruginous, the femora more or less testaceous at the base, with the apex black or 

 piceous, the tibiae and tarsi ferruginous or fusco-ferruginous, the tibiae sometimes piceous at the base ; 

 somewhat thickly clothed with fine brownish or yellowish-brown pubescence. Head densely, minutely 

 punctate ; antennae in the male fully two-thirds, in the female about one-half, the length of the body, the 

 joints from the third elongate and acutely serrate. Prothorax transverse, convex in front, compressed at 

 the sides anteriorly, widest a little before the base, the sides rounded behind and rapidly, somewhat 

 obliquely converging from the basal third forwards, the anterior angles prominent, the base crenulate ; 

 the surface thickly, minutely punctate, with intermixed slightly coarser punctures. Elytra moderately 

 long, a little narrower at the base than the prothorax, widest at the middle ; thickly, minutely punctate, 

 and obsoletely punctate-striate towards the sides and apex. Beneath densely, minutely punctate. 



Length 7f-ll, breadth 3±-4| millim. (<?$.) 



Rah. Mexico, Jalapa (Hoge), Teapa in Tabasco (H. II Smith) ; British Ho:jduras, 

 Belize (Blancaneaux) ; Nicaragua, Chontales (Janson) ; Panama, Volcan de Chiriqui 

 4000 feet (Champion). 



Three males and four females, varying greatly in size. This insect (like Cladus 

 maxillaris in the Eucnemidse) affords an example of a species closely resembling 

 another superficially, but yet differing totally from it in important points of structure. 



Group CNEOGLOSSINI. 



CNEOGLOSSA. 



Cneoglossa, Gueriu, Spec, et Icon. gen. des Anim. Art. livr. ix. no. 36, p. 1, tab. (1849). 



The two insects * here referred to this genus agree with Guerin's description and 

 figures, except as regards the form of the antenna?, these organs in his single species, 

 C. collaris, Guer., from Colombia, being filiform and feebly serrate, instead of dilated 

 and strongly serrate, as in the Central- American forms. The latter also have the third 

 joint slightly shorter (instead of longer) than the fourth. These differences, however, 

 are specific, rather than generic. The head is completely hidden beneath the thorax, 

 as in Helodes, from which the present genus differs in the simple tarsi ; the semicircular 

 thorax, with broadly flavous and almost transparent sides, gives these insects the form 

 of many small Lampyridae. The anterior coxae are furnished with a small trochantin. 



* I am unable to make out the form of the lobes of the maxillse in G. lampyroides, the only species dissected. 



