( lf52 ) 



S. Toiitli turyiti' l)roa(l, flat, curved downward, narrowed IVom middle to end, 

 wiiich is incised ; jjrocesses of stcrnite short and slender (PI. XXVIII. f. 27). 

 Ventral ])rocess of harpe (PI. XXXIX. f. 10) suddenly narrowed at end to a 

 point, dorsal process divided into a single distal and double proximal lobe. Tooth 

 of jienis-sheath short (PI. XXIX. f. 34), inner surface of sheath densely covered 

 ventrally with sharp spines, which form a patch that extends far proximad, the 

 bases of the spines shining through the sheath as small dots ; this armature 

 reminds one skrongly of that found in Amorpka populi. 



? . The two processes of the vaginal plate stand at the side of the vaginal 

 cavity, and are very slender (PI. XXII. i. 2). 



Larva said by Graeser, I.e., to be very similar to, and the pupa not distinguish- 

 able from, that of Sphinx ocellata. — Food-i)lants : Si/ringa and Frax/nu.s. 



Two broods. 



I/al/. Amurland and Japan. 



In the Tring Museum 8 c?c?, 7 ? ? from : Amurland ; Japan. 



XLII. KENTOCHRYSALIS.— Typus : strcckeri. 



KentochrijKdlis Staudinger, in Rom., Mini. Lip. iii. p. 157 (1887) (type : Kireckeri'). 

 Anccryr, Leech (iion Walker, 1856), Proc. Zool. Soc. Loiul. p. 589 (1888). 



c? ? . Head small, scaling prolonged to an interantennal tuft. Tongue very 

 short and weak, the tM'o halves sei)arated distally, sometimes also proximally, the 

 ciliae at the inner edge long and rather widely apart. Pilifer reduced to a ti;bercle, 

 clothed with scales and bristles ; genal process short ; tubercle of labrum low, 

 transverse. Palpus small, smaller in ? than in cJ, joint between segments 1 and 2 

 naked, inner surface of segment 1 scaled, except at base. Antenna: end-segment 

 two or three times as long as high basally, triangular; <S: strongly compressed, 

 ciliae long ; ? : fasciculated ciliae shorter than in <3 . Tibiae not spinose ; s])urs 

 short, hindtibia with two pairs, but proximal pair often concealed under the 

 scaling ; first tarsal segment almost exactly as long as the four other segments 

 togetlier, no prolonged spines ; no mesotarsal comb ; hindtarsus not longer than the 

 cell of the hindwing ; pul villus and paronychium present, but the paronychial lobes 

 very slender. 



cJ. Harpe with a long veutro-distal process. Tenth tergite scaled mesially ; 

 sternite with a broad mesial lobe. Penis-sheath produced into a long hook, which 

 is curved proximad. 



? . Vaginal cavity covered by a broad lobe. 



Larva grannlose, head triangular. 



Pupa without free tongue-sheath, armed with some high, sharp tubercles on 

 the basal sternites of the abdomen, which serve as an organ of locomotion * 



Jl'i/t. Amurland ; Mongolia ; Japan. 



Three species. 



It was not without hesitation that we decided to keep the seven species of 

 Sp/tinffi/lus, Kentochrysdlis and Dolbbm separate under these three generic terms. 

 Though Splilnyulus and liolbina represent divergent branches from the same stock 

 which are easily enough distinguishable, Kentoehrysalis stands intermediate between 



* See Appendix. 



