( 533 ) 



and greater length of the genal spines, the presence of a spine at the apex of the 

 genal process, and the strnctnre of the modified abdominal segments. 



Head. — The frons is not quite so abrnptly rounded as in Ct. wollastoni and 

 conversus, but mnch the greater part of the anterior margin is nevertheless vertical 

 (c?, text-fig. 6) or snbvertical (?). An internal inurassation extends from the 

 oral frontal corner obliquely upward as in Ct. felis and cants, being, however, 

 mnch siiorter in the 6 of craterus than in those species. The eye is well removed 

 from the genal comb, being placed at two-fifths of the distance from the comb to the 

 vertex. There are two long bristles on the frons, one before the e3'e and the other 

 near the oral frontal corner. The comb commences at this corner as in canis emdyelis, 

 and consists of seven (rarely six) long and sharply pointed spines. The occiput 

 bears one long bristle behind the base of the antennal groove, a long and a short 

 one in the middle, and a row of fonr (on each side) near the apex. The ? has no 



Fig. (i. — Ctemicepliahis craterus ^. 



small bristles above the antenna! groove, while the cJ has liere a row of about 

 fifteen. The rostrum reaches to tiie apical fourth of the forecoxa, the first segment 

 of the labial palpi l)eing at least half as long again as segments 2 and 3 together. 



Thorax. — The pronotum has a comb of sixteen to eighteen pointed spines, the 

 dorsal spines being slightly depressed. There is cue row of bristles, containing 

 twelve on the two sides together, on all three thoracic nota. The mesonotum, in 

 ailditiou, jjears many small bristles at the base, arranged in one row laterally and 

 in several irregular rows dorsally, tiiese bristles occurring dorsally in both sexes 

 I'rom the base to near the row of long bristles. The mesopleura have six or seven 

 bristles, of which the one jihiced above the stigma is very long. The metepisteruum 

 has one or two bristles (usually two) and the metepimerum twelve to sixteen in 

 two rows (I), 1) — or 7, — or 8, 7 — or S, 8). 



Abdomen. — h\ the ? the stigmata are as large us in the 6 of rdiii.-i, being 

 slightly smaller in tiie 6. The tergites of c7 and J bear one row of bristles con- 



