148 GENUS CARIBLATTA (oRTHOPTERA) 



the name Neohlattellar In position it ioWows Blattella and comes 

 before NeoblatteUa as here restricted.^ 



Generic Description. — Size small to very small, form moderately- 

 slender to distinctly slender for the group. Sexes showing but 

 little difference in size or form. Head with eyes normally 

 separated by distinctly more than their exceptional depth, this 

 slightly more pronounced in the female sex; the entire contour 

 of face convex, the area between the eyes and between the 

 ocellar spots (in some genera of the group decidedly flattened) 

 very weakly defined, weakly flattened; below this the face is 

 somewhat pinched and transversely convex mesad, the remaining 

 lower portions weakly transversely convex, the lateral margins 

 below the eyes slightly convergent ventrad (in NeoblatteUa these 

 margins are in most cases more nearly parallel, the face in conse- 

 quence being proportionately slightly broader at the clypeal 

 suture). Maxillary palpi with first two joints mere knobs, third 

 and fourth joints very long and slender, fifth (distal) joint dis- 

 tinctly shorter than fourth joint, distinctly enlarged and obliquely 

 truncate to near its base. Pronotum with dorsal surface weakly 

 convex; cephalic margin narrower and less distinctly truncate 

 than caudal margin; lateral margins convex; point of greatest 

 width meso-caudad. Disk of pronotum rotundato-octagonal 

 with angles blunted; remaining marginal portions transparent, 

 these broad laterad. Abdomen of males with dorsum not 

 strikingly specialized. Tegmina, in normal fully developed 

 condition (changes due to reduction occur in tegmina and wings 



2 Ent. Month. Mag., 2d ser. xxii, p. 155, (1911). 



' We here restrict the genus NeoblatteUa to the forms more closely agreeing 

 with the genotype, N. adsperdcoUis (Stal). These differ from the species of 

 Cariblatta in size, which is medium small to large; proportionately wider head 

 at clypeal suture; number of longitudinal discoidal sectors of the tegmina, 

 which are normally always more than five (this count including the median 

 vein, all its Ijranches and the ulnar vein), and three or more spines on the 

 ventro-caudal margin of the cejihalic femora (not counting the distal spine). 

 Closely related, these two genera in a way are comparable with the genera 

 Orchelimum and Conocephalus in that they form two definite and easily recog- 

 nized units which, however, are most difficult to diagnose in that they "differ 

 not in one or several invariable characters, but instead may be distinguished 

 by combinations of characters and a general comi)lex not found in the other 

 genus." All of the species of the present genus are decidedly smaller than the 

 smallest species of NcoUatlella, which species, N. fratrrcula, Ilebard (Ent. 

 News, xxvii, p. 159, (1916) ) shows the closest approach in that genus to the 

 present complex, as here C. insularis does to that genus. 



