SCYMNUS. 233 



S. jansoni. The specimens from Teapa vary a good deal among themselves, the thorax 

 in some of them being white, without markings, in others with a more or less 

 developed spot on the base, with its apex sometimes reaching the front margin; all 

 these, with one exception, have the head white, deeply sunk in the thorax. 



17. Scymnus granum. 



Breviter ovatus, suborbicularis, niger, parce pubescens, pedibus rufis, subtiliter punctatus. Long. 1 millim. 



Hab. Guatemala, Duenas (Champion). 



The two specimens of this minute insect agree in being wholly black, with the legs 

 red and the mouth-organs testaceous ; the puncturing is just visible under a Cod- 

 dington-lens ; the pubescence is greyish, sparse, and irregularly upright. The outline is 

 tolerably uniform ; the thorax has rather straight sides, narrowing in front, and with 

 prominent front angles. It is less shining than the following species (S. grumus), 

 without being opaque. 



In dealing with such very small insects in an obscure genus it is, I think, better to 

 abstain from attempting to describe details which can only be established on longer 

 series, and to give only such characters as are apparent and may enable other specimens 

 from the same locality to be recognized. 



18. Scymnus grumus. 



$. grano iterum similis et affinis, perparum major et nitidior; niger, nitidus, capite, pedibus, abdominis 

 elytrorumque apieibus tenuiter pallidis, parce pubescens, protborace lato, antice baud multo angustiore. 

 Long. 1*2 millim. 



Hab. Guatemala, Capetillo (Champion). 



A little larger than S. granum, and especially more shining; the pubescence is 

 apparently a good deal rubbed off, but the surface is smoother. The head is clear 

 yellow, and the legs are very pale, as is the abdomen, with the exception that the basal 

 portion is black in an indeterminate degree, but extending over two segments. 



A specimen from Zapote perhaps belongs to the same species. 



19. Scymnus corpusculus. 



8. grano similis et affinis, oblongus, niger, nitidus, parce pubescens; capite, prothoracis lateribus, pedibus 

 elytrorumque apieibus tenuiter pallide rufis, feminae corpore obscuriore. Long. 1*5 millim. 



Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith). 



Rather more densely pubescent than S. granum, more parallel in form, and more 

 shining. The thorax is as wide in front as behind, and with acute, though depressed, 

 front angles. The head and sides of the thorax are red, and the front margin of the 

 latter is very narrowly pitchy-red in some examples. The puncturing is very fine, 

 scarcely visible under a Coddington-lens. The abdomen appears not to be red, as in 



biol. centk.-amer., Coleopt., Vol. VII., May 1897. 2 E* 



