LABIATAE 273 



{b) Muscidae : 2. Sarcophaga albiceps Mg., freq. (<:) Syrphidae : 3. Syritta pipiens 

 L., freq., po-dvg. B. Hymenoptera. (a) Apidae : 4. Apis mellifica Z. 5 ; 

 5. Haliclus, small sps., po-cltg. (3) Sphegidae : 6. Ammophila sabulosa Z. 5 and 5. 

 C. Lepidoptera. Sphingidae: 7. Sesia tipuliformis CI. F. F. Kohl (Tyrol), the 

 true wasp Ancistrocerus renimacula Lep. 



711. Calamintha Lam. 



Protandrous bee or humble-bee flowers ; with nectar secreted and stored as 

 usual. Often gynodioecism, more rarely gynomonoecism as well. 



2283. C. Acinos Clairv. (= Thymus Acinos Z.). (Herm. Miiller, ' Fertilisation,' 

 P- 477-) — The flowers of this species are bright violet in colour. Warnstorf describes 

 the pollen-grains as white in colour, rounded, indented with several furrows, densely 

 papillose, about 44 ^ broad and 50 ^ long. 



Visitors. — The following were recorded by the observers, and for the localities 

 stated. — 



Herm. Miiller (Thuringia), the honey-bee, skg. and po-cltg., and the Bombyliid 

 Systoechus sulphureus Mik., skg. von Dalla Torre (Tyrol), the humble-bee Bombus 

 muscorum F. J- Schletterer (Tyrol), the humble-bee B. variabilis Schmiedehn. : 

 (Pola), 2 bees — Anthidium manicatum Z., and A. septemdentatum Ltr. 



2284. C. alpina Lam. ( = Thymus alpinus Z.). (Herm. Miiller, ' Alpenblumen,' 

 pp. 319-21; Schulz, 'Beitrage,' II, pp. 131-2.) — In this species Hermann Miiller 

 distinguished between large- and small-flowered stocks with protandrous hermaphrodite 

 flowers, Schulz, however, found three forms in the Tyrol with hermaphrodite 

 flowers of different sizes, the two larger of which (12-16 mm. and 9-12 mm. long) 

 are protandrous and adapted for cross-pollination. The small flowers (5-7 mm.) 

 are feebly protandrous or homogamous and autogamous. Schulz says that in addition 

 to these hermaphrodite types female stocks often occur, and in this case there are 

 again three forms of flower to be seen, their sizes being about \-\ of those of the 

 hermaphrodite ones. 



Visitors. — The following were recorded by the observers, and for the localities 

 stated. — 



Herm. Miiller, 12 bees and humble-bees, 4 hover-flies, and 15 Lepidoptera. 

 Schulz, more especially Lepidoptera (about 30 sp.), bees less frequently. Both the 

 foregoing noticed flowers perforated by the humble-bees Bombus mastrucatus Gerst. 

 and B. terrester Z. Loew (Pontresina), a long-tongued bee (Osmia caementaria 

 Gersl. 5, po-cltg.), and a true wasp (Celonites abbreviatus VilL, skg.). MacLeod 

 (Pyrenees), 2 bees, 2 Lepidoptera, a Bombylius, and an Empis (Bot. Jaarb. Dodonaea, 

 Ghent, iii, 1891, p. 327). Loew (Berlin Botanic Garden). — A. Hymenoptera. 

 Apidae: i. Anthidium manicatum Z. j, skg.; 2. Apis mellifica Z. 5, do.; 3. Bombus 

 agrorum F. 5 and S, do. ; 4. B. horloium Z. ; 5. B. hortorum Z., var. nigricans 

 Schmiedekn. $, skg. ; 6. B. terrester Z. 5, do. B. Lepidoptera. Rhopalocera : 

 7. Pieris brassicae Z., skg. 



2285. C. officinalis Moench (= Melissa Calamintha Z.). (Schulz, 'Beitrage,' 

 II, p. 196; Knuih, 'Bloembiol. Bijdragen,' ' Bliitenbiol. Herbstbeob.') — The flowers 

 of this species are protandrous, and exhibit none of the variations in size found in 

 C. alpina. 



