Li/C(^na rlnjvinus, tengstrocmii, and j't'ctiosa. 29 



The tegumen is figured alone at fig. 2 ; it is very con- 

 siderably developed laterally, and is tunnel-shaped, 

 excavated considerably at the top behind (i. e., towards 

 the head of the insect), and slightly in the front the 

 sides are full, so that it might be described as being 

 saddle-shaped ; it is supported on, or more correctly 

 arises in, two slender horizontally-inclined arms, and 

 the clasp reaches but little further than to where these 

 suddenly expand into the ample sides of this part of the 

 organ. At the front of the base of the tegumen two 

 large hooks (c) have their origin, which are bent back- 

 wards, and then make a bold curve to the front ; they 

 must be, I believe, freely moveable, and have probably 

 been evolved to their present extent to compensate for 

 the lack of power in the clasps. 



The penis (fig. 2i) in this group of Thecla is extra- 

 ordinarily long ; it is, of course, tubular, becoming larger 

 for the first third, from whence it rapidly tapers to its 

 extremity, where it suddenly expands into a trumpet- 

 shaped orifice. 



The genitalia of Lyccena are shown at fig. 1, in profile ; 

 the lower portion c represents the clasps with the forked 

 guide rising near their juncture with the arms of the 

 tegumen (see also fig. la, showing them in a vertical 

 position under pressure). It will be seen at once what 

 an important part these clasps must play during the act 

 of copulation ; what a powerful grasp they would have. 

 The tegumen d is very diverse from that of Thcda, being 

 much more complicated ; it arises in two somewhat 

 vertical and slender arms, longer than the genus just 

 named, and not horizontally inclined, whilst it is de- 

 veloped in the front into two longish projecting lobes e 

 (=the uncus of Goss), at the base of which lobes 

 the hooks/ have their origin; these are in this genus, 

 particularly in this species, very much stouter, broader, 

 and shorter thnn in Thecla. 



The penis (fig. Ih) is short and thick, slightly bulbous 

 near the end, the tip of which tapers rapidly into a blunt 

 point. Two strong teeth are emitted backwards from 

 the bulbous portion of this instrument. At fig. 4 I have 

 drawn the same organs of tenf/strd'inii in profile ; they 

 are from a large specimen designated by Staudinger 

 v. maxima, and really re(|uire no explanation. They 

 follow very closely the shape of Tltecla sassa aides, but 



